Run: 2026-02-16-01KHKAT82FEEJ8MM4GNBH9PSJA

Run Details

Duration:
19.8s
Cost:
$0.014730
Provider:
OpenAI

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched silver threads across Blackmoor Pier as Inspector Lysa Hart arrived, summoned by an anonymous midnight telegram without warning. The lighthouse door hung open, breathing salt and kerosene, while gulls circled silently above the darkened waterline before dawn broke. Inside, the keeper lay slumped beside the ledger, throat neatly cut, hands still clutching a brass key warm with blood. No footprints marked the wet floor, yet a single candle burned, its flame steady as held breath in sealed air. Lysa noticed the telegram pinned to a nail, addressed in her father's handwriting, dated tomorrow, signed simply, Friend again here. From the tower stairs came a faint scrape, like someone retreating, and she drew her revolver, listening hard in darkness.
created_at"2026-02-16T13:39:28.357458+00:00" 2/16/2026, 1:39:28 PM
model"openai/gpt-5.2-20251211"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5165
moderation_latency(null)
generation_time19634
tokens_prompt46
tokens_completion719
native_tokens_prompt41
native_tokens_completion1047
native_tokens_completion_images0
native_tokens_reasoning882
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.01472975
router(null)
provider_responses
0
id"resp_0fc0ae3c4f52505b0169931dfc0e388197b4790fb07552efde"
status200
is_byokfalse
latency194
endpoint_id"f00142c2-6a93-49ce-9e36-5593b904ce3b"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.2-20251211"
api_type"completions"
id"gen-1771249147-DkrkCmRjewgvaPxMh5B6"
upstream_id"resp_0fc0ae3c4f52505b0169931dfc0e388197b4790fb07552efde"
total_cost0.01472975
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520